| 摘要 |
This invention relates to a back-flushable dust collector for collection of hazardous dust, for example asbestos and silica dust. One major disadvantage with existing filter technology is that a filter arrangement needs a baulky stand-alone pre- separator and the handling of the contaminated filter media exposes the persons involved for very dangerous dust. The present invention solves this by integrating a filter body (1) containing a filter media (6), inside a cyclone body (17) in such a way that most of the coarse dust is trapped in an outer dust chamber (20) and never reaches the filter media (6). The fine dust is then trapped by the filter media (6) and is back flushed into a dust chamber (12) and finally both dust chambers (20) and (12) are emptied into one common dust bag (14), or separate dust bags (14a, 14b), where the dust bag (14) or (14b) also acts as a seal between the two chambers. The invention is mainly used where the dust load is heavy, for example in rock-drilling and concrete machining. |
